Mold.



PATENTED MAY 2a, 19o?. P. A.- BowsHER. Y

MOLD APPLIOATI'ON FILED SEPT.25, 1906.

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MOLD.

f ArrLldAToN FILED SEPT. 25, 190e.

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UNITED STATES PATENT OFFICE.

PETER A. BOWSHER, OF TERRE HAUTE, INDIANA, ASSIGNOR TO MODERN CONCRETE MACHINE COMPANY, OF TERRE HAUTE, INDIANA, A COR- PORATION OF INDIANA.

MOLD.

Specification of Letters Patent.

Patented May 28, 1907.

Application led September 25, 1906. Serial No. 336,101.

This invention relates to molds for -forming blocks of building material; and it consists in the novel construction and combination of the parts hereinaiter'fully described and claimed.

In the drawings, Figure 1 is a side view of a mold. Fig. 2 is a plan view, and Fig. 3 is an end view, oi' the mold shown in Fig. l. Fig. 4 is a side view of a modilied mold for forming straight blocks. Fig. 5 is a cross-section taken on the line xin Fig. 4. Fig. 6 is a side view, and Fig. 7 is a plan view, showing the side plate used when half blocks are formed. Fig. 8 is a plan views howing the angle-piece which is placed in the mold when blocks with angle-shaped ends are to be formed.

A is the stretcher or base-plate on which the block is formed. The surface of this stretcher may be smooth or it may be carved so as to mold an imitation of stone upon the surface of the block.

B are two lugs on the front edge of the stretcher A, and t are dowel pins which project upwardly from the end portions of the said stretcher.

The block is molded face downward so that the surface of the stretcher forms the exposed 'face of the block when the said block is built into a wall.

C is the side plate the bottom edge `of which is placed on the stretcher close to the lugs B. D are screws which engage with the said lugs, and which are used to press the side plate rearwardly. The side plate C is` provided with holes ior receiving the cores c, which are slidable through the said holes.

E and F are the two end plates of the mold. The mold shown in Figs. 1, 2 and 3 is used for making corner blocks, and the end plate F is consequently made higher than the end plate E; and the side plate C is provided with an extension G at that end. Each end plate is provided with hinges H which connect it pivotally with the side plate, and it has a hole for engaging with the dowel pin of the stretcher.

I is the pallet which forms the rear side of the mold, and which rests on the rear portion of the stretcher. This pallet is a plain flat plate of the required size and shape, and in the mold for corner blocks it has an extension i.

v` Each end plate is provided with a pivoted hook J for engaging with the pallet. This hook is pivoted on an eccentric j provided with an operating lever or handle k, and the eccentric is pivoted on a pin K between the `lugs L onv the end plate.

The extension of the mold is also provided with a small end plate M, which is pivoted by hinges m to the extension Gr of the side plate.

N is a hook which is pivoted to a lug on the free end of the plate M, and which extends across the extensioni, of the pallet and drops into a hole in a lug n on the extension G. This hook holds the end plate M closed.

The cores c are rectangularblocks provided with handles, and they are of any desired size and shape. Any desired number of cores can be used. y

The block is molded face downward oi' very wet material which is placed and packed within the mold, and in this manner a block of superior quality can be Jformed. When the block is set sufficiently, the mold is turned over so that the pallet comes at the bottom.` The set-screws and dowel pins prevent the parts from slipping when the mold is being turned over. The side plate,

stretcher, and end plates, are then removed.

and can be used in connection with a similar pallet to form another block. The pallets are not removed from the blocks until after the blocks become hard.

In the modification shown in Figs. 4 and 5, the side plate C and the pallet I are not provided with extensions, and the hinged end plates E are of equal height. This mold is suitable for forming straight blocks.

C is a side plate which is used in place of the side plate C/ to form two `blocks in one mold. The side plate Cl is provided with a slotted bar P which is slidable horizontalljyT in a hole in the side plate. A partition plate IOO R is provided and is slidable vertically in the slot of the bar P and in a guide groove r in the inner face of the side plate.

S is an angle-shaped piece which is placed in either of the molds in order to form a block with an angle-shaped end instead of a square end. This angle-shaped piece is formed of two plates of unequal length secured together at an angle and having beveled ends s. The long plate extends across the mold, and the shorter plate projects from it. The beveled ends rest against the side plate and pallet, and the plates are temporarily secured in the mold in any approved manner.

What I claim is:

1. In a mold, the combination, with a stretcher having lugs at its front edge, of a removable pallet, side plate and end plates provided with means for connecting them together, stops which prevent all the said parts from sliding on the said stretcher, and screws engaging with the said lugs and forcing the said side plate rearwardly.

2. In a mold, the combination, with a stretcher having lugs at its front edge, of a pallet resting on the rear part of the said stretcher, a side plate resting on the front part of the stretcher, set-screws engaging with the said lugs and forcing the side plate rearwardly, end plates hinged to the said side plate and provided with catches for engaging with the said pallet, and dowel pins engaging with the said end plates and the end portions of the said stretcher.

3. In a mold, the combination,` with a stretcher, of a pallet at the rear part of the stretcher provided with an extension at one end, end plates of unequal height hinged to 1 the said side plate and provided with catches 1 for engaging the said pallet, and a short end plate hinged to the extension olfY the said side plate above the middle portion of the inold and provided with a fastening device lor holding it in engagen'ient with the said extension of the pallet.

4. In a mold, the combination, with a stretcher, and a side plate and a pallet resting thereon; of an end plate hinged to the said side plate and provided with projecting lugs, an eccentric pivoted between the said lugs and provided with an operating device, and a hook for engaging with the pallet pivoted on the said eccentric and operating to press the end portion ol" the said pallet foreibly against the rear edge of the said end plate when the said eccentric is tin-ned in one direction. Y

5. In a mold, the combination, with a stretcher, and a side plate and a pallet resting thereon, said side plate being provided with a guide hole and a vertical guide groove; of a slotted bar slidable horizontally in the said guide hole, and a partition plate slidable vertically-in the slot of the said bar.

6. In a mold, the combination, with a stretcher, and a side plate and a pallet resiing thereon; oil an angle-shaped piece extending between the said side plate and pallet and formed of two plates ol unequal length having beveled ends, the longer ol' the two said plates extending across the inold and having one end of the shorter plate secured to its middle portion.

vIn testimony whereof I have allixed in v signature in the presence of two witnesses.

PETER A. BOll/'Sl I Eli. Witnesses:

IV. T. GLnAsoN, DANIEL M. DUNCAN. 

